Effects of Velocity and Current on Temperature Distribution Within Crossflow (Blown) Electric Arcs

[+] Author and Article Information
D. M. Benenson, A. A. Cenkner

State University of New York at Buffalo, Buffalo, N. Y.

J. Heat Transfer 92(2), 276-284 (May 01, 1970) (9 pages) doi:10.1115/1.3449661 History: Received July 10, 1969; Online August 11, 2010


The effects of both velocity and current upon the temperature distribution within, and the cross-sectional shape of, steady-state 1.1 atm argon crossflow arcs have been determined experimentally. The tests were conducted over one range at constant current (I = 60.3 amp), U = 0, 41.8 ≤ Ucm/sec ≤ 127.0 and another range at constant velocity (U = 41.8 cm/sec), 42.5 ≤ Iamp ≤ 80.8. Forced convection (at constant arc current) exerts a profound influence upon the crossflow arc. At higher velocities, forced convection appears to completely penetrate the plasma. The effect of increasing current (at constant velocity) is to shield a central core region from the flow field. As a result of the effects of velocity, electrode design, interactions of the electrode jets, and slight misalignment of the jets, neither the isotherms nor the cross sections can be considered to be generally circular, even at the higher currents.

Copyright © 1970 by ASME
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